rrccad

Lives in Canada Canada
Joined on Jul 5, 2012

Comments

Total: 2191, showing: 1 – 20
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In reply to:

Twong: Polishing lens elements by hand, that must be for show only. There is no way to achieve high degree of reproducibility. Skilled professionals definitely exist, but not for this purpose, I hope.

Having ground astro mirrors in the past, yeah I get that feel, and experience. Perhaps you dont.

You have no clue about the subject outside of your disbelief.

Link | Posted on Mar 27, 2017 at 03:41 UTC
In reply to:

Twong: Polishing lens elements by hand, that must be for show only. There is no way to achieve high degree of reproducibility. Skilled professionals definitely exist, but not for this purpose, I hope.

seriously dude. give it up. there's no reason for canon to suggest anything different than the truth, especially when they also showed off their new automated and self learning lens grinding system.

apparently the alternative universe is yours and yours alone. Take some pics of the unicorns please.

Link | Posted on Mar 26, 2017 at 23:26 UTC
In reply to:

Leandros S: "It takes decades of experience to design a lens like the Canon EF 16-35mm F2.8L III USM."

Today, it mostly takes state-of-the-art software.

that would explain the Sony design process ;)

Link | Posted on Mar 22, 2017 at 21:52 UTC
In reply to:

Jeff Peterman: Are spare Lithium batteries included in the ban? If so, this will be a big problem because they are not allowed in checked bags. If not, then the item most likely to be dangerous will still be allowed in the cabin (the "Samsung" problem can easily be induced on purpose!).

this is my question, what do we do with lithium batteries for our laptops, cameras,etc .. does this mean we can't bring them at all?

Link | Posted on Mar 22, 2017 at 16:31 UTC
In reply to:

Leandros S: "It takes decades of experience to design a lens like the Canon EF 16-35mm F2.8L III USM."

Today, it mostly takes state-of-the-art software.

the proving of the designs is probably computer, but they still have to come up with a design that meets the optical goals, construction goals and cost and is in canon's patent portfolio.

Link | Posted on Mar 22, 2017 at 14:30 UTC
In reply to:

Steve Balcombe: Funny that one of them has named the 75-300 USM as the first lens he worked on - "Canon's worst lens" according to some!

haha, i thought the same.. "that lens..you mention THAT one?"

Link | Posted on Mar 22, 2017 at 14:28 UTC
In reply to:

garyknrd: My last flight about two months ago. I had to take out my cameras and check my baggage. Luckily, they let me carry my lenses on board as carry on. I have never seen this before. And this is before the ban? And, not in the restricted areas listed.
You don't mess with the airlines, they were very rude and told me if I wanted to travel not to bring my big lenses.

I've had to do this every time I've left Mexico City.

take external hard drives, screens, laptop, all cameras out of the bag(s) and go separately.

It's no big deal - if it keeps me safe and it's understood.

Link | Posted on Mar 22, 2017 at 13:05 UTC
In reply to:

chupacabra1: I'm fine for a safer America. It's not the end of the world guys, lol.

safer? oh please.. this does zip to make Amurika safer.

Link | Posted on Mar 22, 2017 at 02:34 UTC
In reply to:

peter2013: This is nuts. How is the laptop any safer in the cargo hold? Bombs in cargo holds have brought down airliners before. What’s to stop a would-be terrorist from carrying his laptop on a flight from some other airport, like Logan or Heathrow? And who in their right mind would put expensive laptops and DSLRs in checked luggage? They grow legs there.

Seriously, Donald Trump must have a little timer on his desk that goes off after lunch. And he says, "Gosh, would you look at the time? It’s almost 2 o’clock and I haven’t done anything yet completely bat**** crazy today! Quick, where’s my Executive Order memo pad…?"

it's still stupid. there's security protocols for carry on baggage that could apply to all electronic devices that are far more than they do now.

storing in the cargo hold does nothing for security.

let's see .. a 12 hour flight.. yeah, a TIMER be hard isn't it?

Link | Posted on Mar 22, 2017 at 02:32 UTC
In reply to:

Ebrahim Saadawi: We've all been disappointed since the studio scene posted.

The 50s is the same image quality really

So let me remind you the benefits of a 5DSr or so:

-MUCH faster and more accurate AF system
-Much smaller size and lower weight
-Ergonomics proven and tested for ages
-Big "cheap" batteries that last forever
-MUCH faster burst rate at 7fps
-The Gaynormofous number of exceotional lenses available (L glass, ART glass, Otus glass, Nikkor glass, even m42 glass, zeiss glass,)
-Availability of great accessories ranging from flashes to batteries
-Much bigger service-centre coverage
-The so many little features in firmware: Picture Styles, HTP, ALO, DLO, Distor. Correction, CA correction, intervalometer,
-S35 4K 4:2:2 video internally,
-Dual Pixel AF in Liveview/Video
Shall I go on?

What about an A7rII comparison list? Even bigger

then again, that super 5Ds sounds pretty good. plop in the super new 120MP sensor it will have and call it a day. where can i preorder?

Link | Posted on Mar 21, 2017 at 22:25 UTC
In reply to:

TheWhiteDog: Thank you so much for this article!!! Here I was racking my brains out figuring how I could upgrade to this camera from my Fuji x30- you just saved me a bundle of money- I have no idea how I'll ever be able to thank you enough! All kidding aside, excellent article and a very good cautionary tale on why jumping at "the new next best thing" is not always wise. These cameras will develop further 100MP sensors, better autofocus etc but right now they are in their infancy- but it has to start somewhere.

except there was a bigger change in sensor sizes from aps-c to full frame than from full frame to micro-medium format.

Link | Posted on Mar 21, 2017 at 22:21 UTC
In reply to:

Dr_Jon: As they are putting all the test data for an individual lens into the lens now (for designs no more than five years old), and as DPP will use it I assume in the EXIF too, how long before someone decodes that and you're one camera/laptop away from selecting the best lens on the shelf... I wonder what they think of that possibility...

yes I know DLO does alot of incredible magic.

however I dont' see the problem the worst would be that DLO does no better than it does today.

it does mean that if you didn't go to a canon authorized repair facility you won't be able to exact the best from DLO + lens.

however, to be honest, DLO's big bang for the processing buck is on non L's.

Link | Posted on Mar 21, 2017 at 20:33 UTC
In reply to:

Dr_Jon: As they are putting all the test data for an individual lens into the lens now (for designs no more than five years old), and as DPP will use it I assume in the EXIF too, how long before someone decodes that and you're one camera/laptop away from selecting the best lens on the shelf... I wonder what they think of that possibility...

they just don't use the data, it would be for optional processing anyways.

since we don't even know how the processing would occur - it's a little hard to be thinking negatively about it.

supposedly, m43 lenses have been doing this as well - no?

Link | Posted on Mar 21, 2017 at 18:24 UTC
In reply to:

biza43: For those that are more interested in real world experience, rather than the geeky approach:

http://www.imaging-resource.com/PRODS/fuji-gfx/fuji-gfxA.HTM

their comparisons are based upon the jpgs.

Link | Posted on Mar 21, 2017 at 17:54 UTC
In reply to:

Dr_Jon: As they are putting all the test data for an individual lens into the lens now (for designs no more than five years old), and as DPP will use it I assume in the EXIF too, how long before someone decodes that and you're one camera/laptop away from selecting the best lens on the shelf... I wonder what they think of that possibility...

edit: i see you said the same thing down below :P

Link | Posted on Mar 21, 2017 at 17:03 UTC

that's honestly going to be stupid crazy if they do that ban more wide spread. there's no way I'd fly with my laptop in the checked luggage. I'd honestly have to strip it down, remove the drives, etc before packing it into my luggage.

Link | Posted on Mar 21, 2017 at 17:01 UTC as 87th comment | 5 replies
In reply to:

Oleg Ivanovskiy: What about diffraction limit? The smaller your sensor, the smaller its pixels - the less F-numbers you can use before stumbling into detail loss due to diffraction, no?

obviously not well enough. because cambridge in color also explains the theory that depending on your image to observer size, alot of what we quibble about is meaningless.

apparently you didn't look at the advanced calculator or understand the results.

it depends on the OBSERVER distance and the image magnification, but usually the observer increases the distance to view an image.

even with a 3ft observer distance, and a 6 foot wide print, diffraction at f/11 is unrecognizable on a 120MP full frame sensor. which doesn't exist, but it proves the point that you have to get up to insane MP's before it's a problem.

the only time diffraction will come into play is if you increase the image magnification and maintain the same observer distance (ie: crop heavily).

but in reality the micro MF format only has a 2/3's of a stop difference in that anyways it's not as if it's going to make a huge bit of difference.

Link | Posted on Mar 21, 2017 at 16:55 UTC
In reply to:

Oleg Ivanovskiy: Latest full-frame lenses from Canon and Sony cost af if they were MF-ready, by the way. Each generation higher than previous.

Right. do you have any idea what a 24-70 2.8 would cost on mini-MF? a 70-200 2.8?

the 25-51/f3.2 equivalent Fuji is $2400....

Link | Posted on Mar 21, 2017 at 14:25 UTC
In reply to:

FuhTeng: Fascinating read. I still want to rent one of the EVIL MF pair (probably the Fuji) just to try it out and enjoy it, but this confirms that I'm going to rent a D810 to go with my D750 for my landscape trip in the fall.

I'm really curious about the next article about color profiles (is that the same as a LUT?). One of my favorite photographers loves him some MF (after using D810 for lots of paid work) and he loves the "tonality and tonal transitions" of the images. I've never seen a comparison between what a D810 and Hassy MF can do in a big print, but I'm curious if your next article will address that aspect of the FF vs MF discussion.

hassy is 16 bit raw files though, and I do believe different sensors.

this fuji (and the smaller hassy) is akin to a scaled up full frame sensor and is 14 bit.

Link | Posted on Mar 21, 2017 at 14:22 UTC
In reply to:

biza43: For those that are more interested in real world experience, rather than the geeky approach:

http://www.imaging-resource.com/PRODS/fuji-gfx/fuji-gfxA.HTM

except IR atypically just looks / compares JPG output.

Link | Posted on Mar 21, 2017 at 14:22 UTC
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